diff --git a/bk_paper.c b/bk_paper.c

index 0b73d39..d72eff7 100644

--- a/bk_paper.c

+++ b/bk_paper.c

@@ -75,6 +75,8 @@

 #include "halibut.h"

 #include "paper.h"

+font_info *all_fonts;

+

 typedef struct paper_conf_Tag paper_conf;

 typedef struct paper_idx_Tag paper_idx;

diff --git a/paper.h b/paper.h

index 5a27277..e5aa9e7 100644

--- a/paper.h

+++ b/paper.h

@@ -78,7 +78,7 @@ struct ligature_Tag {

  * metrics are read in.

  */

-font_info *all_fonts;

+extern font_info *all_fonts;

 struct font_info_Tag {

     font_info *next;